Add support to create a comment

Author: KoditkarVedant

Src/Notion.Client/Api/ApiEndpoints.cs

@@ -65,6 +65,8 @@ public static class SearchApiUrls
         public static class CommentsApiUrls
         {
             public static string Retrieve() => "/v1/comments";
+
+            public static string Create() => "/v1/comments";
         }
     }
 }

Src/Notion.Client/Api/Comments/Create/CommentsClient.cs

@@ -0,0 +1,17 @@
+using System.Threading.Tasks;
+
+namespace Notion.Client
+{
+    public partial class CommentsClient
+    {
+        public async Task<CreateCommentResponse> Create(CreateCommentParameters parameters)
+        {
+            var body = (ICreateCommentsBodyParameters)parameters;
+
+            return await _client.PostAsync<CreateCommentResponse>(
+                ApiEndpoints.CommentsApiUrls.Create(),
+                body
+            );
+        }
+    }
+}

Src/Notion.Client/Api/Comments/Create/Request/CreateCommentParameters.cs

@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace Notion.Client
+{
+    public interface ICreateCommentsBodyParameters
+    {
+        [JsonProperty("rich_text")]
+        public IEnumerable<RichTextBaseInput> RichText { get; set; }
+    }
+
+    public interface ICreateDiscussionCommentBodyParameters : ICreateCommentsBodyParameters
+    {
+        [JsonProperty("discussion_id")]
+        public string DiscussionId { get; set; }
+    }
+
+    public interface ICreatePageCommentBodyParameters : ICreateCommentsBodyParameters
+    {
+        [JsonProperty("parent")]
+        public ParentPageInput Parent { get; set; }
+    }
+
+    public class CreateCommentParameters : ICreateDiscussionCommentBodyParameters, ICreatePageCommentBodyParameters
+    {
+        public string DiscussionId { get; set; }
+        public IEnumerable<RichTextBaseInput> RichText { get; set; }
+        public ParentPageInput Parent { get; set; }
+
+        public static CreateCommentParameters CreatePageComment(ParentPageInput parent, IEnumerable<RichTextBaseInput> richText)
+        {
+            return new CreateCommentParameters
+            {
+                Parent = parent,
+                RichText = richText
+            };
+        }
+
+        public static CreateCommentParameters CreateDiscussionComment(string discussionId, IEnumerable<RichTextBaseInput> richText)
+        {
+            return new CreateCommentParameters
+            {
+                DiscussionId = discussionId,
+                RichText = richText
+            };
+        }
+    }
+}

Src/Notion.Client/Api/Comments/Create/Response/CreateCommentResponse.cs

@@ -0,0 +1,6 @@
+namespace Notion.Client
+{
+    public class CreateCommentResponse : Comment
+    {
+    }
+}

Src/Notion.Client/Api/Comments/ICommentsClient.cs

@@ -10,5 +10,7 @@ public interface ICommentsClient
         /// <param name="retrieveCommentsParameters">Retrieve comments parameters</param>
         /// <returns><see cref="RetrieveCommentsResponse"/></returns>
         Task<RetrieveCommentsResponse> Retrieve(RetrieveCommentsParameters retrieveCommentsParameters);
+
+        Task<CreateCommentResponse> Create(CreateCommentParameters createCommentParameters);
     }
 }